Porto-Novo's country (5)

I believe the answer is:

benin

(Other definitions for benin that I've seen before include "Republic in West Africa" , "West African republic" , "West African state, formerly called Dahomey" , "Nation" , "Country W. of Nigeria" .)

I've seen this clue in the Universal and The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.